Home / 859,278.78-1,289,509.86-298,313.28

Finding the Fourth Proportional to 859,278.78, 1,289,509.86 and 298,313.28

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Solution

The fourth proportional to 859,278.78, 1,289,509.86 and 298,313.28 is: 447,675.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,278.78 : 1,289,509.86 = 298,313.28 : x
  2. Step 2: Convert to fraction form
    859,278.78/1,289,509.86 = 298,313.28/x
  3. Step 3: Cross multiply
    859,278.78x = 1,289,509.86 × 298,313.28
  4. Step 4: Simplify right side
    859,278.78x = 384,677,915,928.94
  5. Step 5: Solve for x
    x = 384,677,915,928.94/859,278.78
  6. Step 6: Final answer
    x = 447,675.34

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.